We know there's huge dissatisfaction with fares because we have the highest fares in Europe.
None of them include Southwest's fares, however, or fares on the smaller but growing Allegiant Airlines.
Daniel Farr from Make Fares Fair said he will carry on campaigning until fares are reduced.
Regulated fares, which include season tickets and off-peak intercity journeys, make up half of all fares.
Adult Ridacard fares will also go up, but all child and student fares will stay the same.
Business-class fares from London are generally at least a quarter higher than similar fares from continental airports.
So, in theory off-peak fares could increase but peak fares could potentially decrease.
There is a double reason why unregulated fares rise faster than regulated fares, says Christian Wolmar, author of Broken Rails.
He has reduced Oyster fares for next year while increasing cash fares to encourage more people to make the switch.
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That was my policy, which I persuaded Labour was right against Livingstone's preference for free fares - no fares - on London Transport.
American Express predicts that because of this, short-haul economy fares will rise by approximately 10% and long-haul economy fares will increase about 8% in Latin America.
It said NI Railways fares will also be increased by an average of 3%, while Ulsterbus and Goldline fares will go up by 2%.
Since these charges depend on the level of fares, and most fares are strictly controlled, direct government subsidies to the railways will almost certainly have to increase.
Those lowest average fares increased the following week by 5% from the low, and fares in the final week before departure shot up by 30% from the low.
Continuing consolidation among airlines in Latin America, combined with increasing demand, will drive increases in economy fares over 5% and business class fares could increase by nearly 10%.
But with fuel prices rising, there's a concern that, like the Air Discount Scheme, the discounted fares will catch up with the current standard fares all too quickly.
The differences between these fares are far, far greater than any estimate for additional costs relating to the ETS. Yet they're all fares that commercial airlines are happy to offer.
It is true that industry consolidation has contributed to higher fares in some markets, although the principal cause of higher fares over the last several years has been higher oil prices.
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While proponents of deregulation point to lower fares between high density hubs, these bargains are subsidised by exorbitantly high fares for flights between the thousands of smaller cities across the country.
Although he didn't rule out raising fares to pay for the plan, Neeleman says that if customers don't return to the airline, JetBlue may have to drop fares to get them back.
The only policy of the Livingstone GLC which is remembered and respected, and was successful, is "Fares Fair" - cuts in fares and simplified fares, to get people back onto public transport.
Earlier in the session, Mr Cameron and Mr Miliband clashed on the issue of rail fares, with Mr Miliband accusing the government of allowing train companies to introduce large increases in rail fares.
Since the last set of British Rail fares were published in June 1995, inflation measured by the Retail Prices Index (RPI) has been 66%, according to research by fares expert Barry Doe for Rail Magazine.
Transport minister Simon Burns said that the fares and ticketing review was "not about squeezing more revenue out of regulated fares and that any changes stemming from it would need to be balanced and fair".
At the same time, airlines could enhance their already uncanny ability to set fares in lockstep by having access to fares not visible on independent computer reservations systems, like those operated by Sabre, Travelocity's parent company.
Train companies are allowed to vary regulated fares by up to 5% above, or by any amount below, the average change in regulated fares, so that they can respond to changes in demand in particular areas.
Kayak is a travel search company that aggregates travel data (schedules, availability, fares) from hundreds of travel websites (both travel suppliers such as hotel chains and airlines, and third-party online travel agencies) and facilitates quick and easy comparison of fares through its website and mobile applications.
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Meanwhile, rail fares in West Yorkshire are rising by 6.2% - more than the national average.
When searching for fares on budget airlines though, be aware of the fees.
January is the traditional time of year for teeth gnashing from rail passengers as fares rise again.
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